Physics (AS & A Level) · Feb / March 2020 · Paper 12 · Question 32

Electrons move in a vacuum from one metal plate to another metal plate. As a result of this, there is an electric current of 48 µA between the two plates. How many electrons are emitted by the first plate in a time of 5.0 minutes?

1. A1.4 × 10^4
2. B1.5 × 10^15
3. C1.8 × 10^16
4. D9.0 × 10^16

As printed in the paper